The Tag Status element is used to represent the current status of the tag. The value of this element is affected only for those tag operations that involve a physical device (for example, writing to the Field element will affect the status element, but writing to the Control Mode will not). Tag Status element is reset after I/O server restart. The element value contains a set of bit flags.
The following table describes the Tag Status element:
|
Reference Syntax |
Citect SCADA Data type |
Description |
|---|---|---|
|
TagName.Status |
INT |
Value of Tag Status element |
|
TagName.Status.V |
INT |
Value. A set of bit flags representing the following data: - 0x1: Read Pending. - 0x2: Write Pending. - 0x4: Write Successful. - 0x8: Write Unsuccessful. Default value: 0. |
|
TagName. Status.VT |
TIMESTAMP |
Timestamp of when the value last changed. |
|
TagName.Status.Q |
QUALITY |
Quality. |
|
TagName.Status.QT |
TIMESTAMP |
Timestamp of when the quality last changed. |
|
TagName.Status.T |
TIMESTAMP |
Timestamp of when the element was last updated. |
Published June 2018